reactjs - 警告 : Received `true` for a non-boolean attribute `jsx` . 时代风格的 Jsx

Question

我正在尝试将 styled-jsx 与一些代码一起使用。但是，无论我做什么，我似乎都会遇到错误

index.js:1437 Warning: Received `true` for a non-boolean attribute `jsx`.

If you want to write it to the DOM, pass a string instead: jsx="true" or jsx={value.toString()}.
    in style (at App.js:12)
    in div (at App.js:9)
    in Test (created by Route)
    in Route (at App.js:29)
    in Router (created by BrowserRouter)
    in BrowserRouter (at App.js:27)
    in App (at src/index.js:7)

我尝试重新安装 node_modules，确保我的配置都很好，并测试了不同的版本。

我的 package.json，

{
  "name": "preview",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "contentful": "^7.4.1",
    "react": "^16.8.6",
    "react-dom": "^16.8.4",
    "react-router-dom": "^4.3.1",
    "react-scripts": "^3.0.1",
    "socket.io-client": "^2.2.0",
    "styled-jsx": "^3.2.1"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "babel": {
    "presets": [
      "@babel/preset-stage-2"
    ],
    "plugins": [
      "styled-jsx/babel"
    ]
  },
  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 11",
    "not op_mini all"
  ],
  "proxy": "http://localhost:5000/"
}

我的示例 React 代码仍然抛出错误。

const Test = () => {
    return (
        <div>
        <p>test
        </p>
        <style jsx>{
            `
            p {
                color: red;
            }
            `
        }
        </style>
        </div>)
}

class App extends Component {

  render () {
    return (
      <Router>

        <Route path='/test' component={Test}/>

      </Router>

    )
  }

}

export default App;

我希望不会有任何基于文档的错误消息

Answer 1

好的。由于我自己花了几个小时才解决这个问题，我希望我能帮助你们也有这个问题。
要将 styled-jsx 与 create-react-app 一起使用，您需要:

yarn add react-app-rewired customize-cra

替换 package.json

    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",

和

    "start": "react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test",

创建(在根目录中，在 package.json 旁边)文件 config-overrides.js

const { override, addBabelPlugin, addBabelPreset } = require('customize-cra');
module.exports = override(
    addBabelPlugin('styled-jsx/babel')
);

在根目录文件中创建 .babelrc (它只在你运行 jest test 时使用)

{
    "plugins": ["styled-jsx/babel"]
}

在您的 index.js (或者你将 React 挂载到 DOM 的位置)，在调用 ReactDOM.render(....) 之前，插入以下代码，
取自 https://github.com/vercel/styled-jsx/issues/560#issuecomment-599371026

const _JSXStyle = require('styled-jsx/style').default;
if (typeof global !== 'undefined') {
    Object.assign(global, { _JSXStyle });
}

不幸的是，如果没有它，这种复杂的配置有点变化无常。
只有在使用 yarn build 时才需要第 4 步和第 5 步或 yarn test使用创建 react 应用程序。